Which of the following statements with reference to 'blood' is/are correct?1.Blood is composed of plasma and different types of cells.2.The presence of haemoglobin makes blood appear red.Select the correct answer from the code given below:

1. A

   Only 2

   Only 2. Plasma-and-cells is also keyed.

2. B

   Neither 1 nor 2

   Neither. Both NCERT lines hold.

3. C

   Both 1 and 2

   Both 1 and 2. Blood = plasma + cells. Haemoglobin makes it look red.

4. D

   Only 1

   Only 1. The haemoglobin limb is also keyed.

Summary. Official key is (c) both. Plasma plus cells; haemoglobin is the red pigment. Also note: Plasma ~55% — Water, proteins, salts; RBC — Haemoglobin; oxygen; WBC / platelets — Defence and clotting; HbFe — Iron in haem.